Lindsey Buckingham wrote "Sad Angel," along with the set's two other new tunes -- "It Takes Time" and "Miss Fantasy." Lindsey wrote the fourth track, "Without You," with Stevie Nicks. The song dates back to their pre-Fleetwood Mac days, when they worked together as the duo Buckingham Nicks.

A post on Fleetwood Mac's website says the song had been "lost," but was "happily rediscovered when someone posted an early demo of it on YouTube." Extended Play is the first set of new Fleetwood Mac material since 2003's Say You Will.